Why dunkirk is special film for film industry

This is the speech after dunkirk evacuation by british PM Winston Churchil .This is exactly the spirit of the movie .This speech and Dunkirk shaped entire world by defeating the Nazi Germany .Even though Churchil has many flaws but he raised to the occasion and delivered a grand victory and it cahnged everything,generations people ,me ,you and everyone on this planet .So yes it is very important to know the history

It is also important movie for film making as it reached new heights with technical brilliance ,magnificent cinematography and brilliant direction .There are no cliche scenes ,extremely professional dialogues to the point and no character backstories shows this movie will change the perception of viewing films in future .

This movie is important for Director because he always viewed as more fiction oriented and thrilling genre filmmaker but this film showed his caliber in handling dramas based on real situations